I have Dell Vostro 1400 with Windows vista for more than year now.Today all of sudden I observed that left side speaker of my laptop is not functioning.
Can anyone suggest me how to test if it has any software or hardware issues?
Thanks in advance.
Try running the audio test in Dell Diagnostics. This interactive audio test is designed to narrow down the problem to either the software or hardware. To run Diagnostics restart the computer and as soon as it starts to boot up tap f12. Select 'Diagnostic' from the boot menu. The computer will run its pre-boot assessment tests (PSA) before the Dell Diagnostic starts. The PSA tests play some beeps and tones through the system speaker but this doesn't test the rest of the audio hardware, so you still need to let Dell Diagnostics run after the PSA. Dell Diagnostics plays an instrumental piece of music complete with drums, so if you only hear some tones then you have only run the PSA.When Dell Diagnostics opens, select 'custom', then the audio test. This will test your audio system independently of Windows and drivers, meaning it doesn't matter if they are working correctly or not. Alternate between using headphones and listening to speakers in case only one is working.[If you have ever reformatted your hard drive then the Diagnostics partition might have been wiped off. If the Dell Diagnostics option fails to open, run it from the Drivers and Utilities (Resource) CD if you have one.]If you don't hear the music during the test through both speakers it definitely means there is a hardware failure somewhere in the system. If you do hear the audio through both speakers that means the hardware is okay but there is a problem with the software or configuration.
Jim Coates -- senior forum member